Black Star, the duo of Talib Kweli and Yasiin Bey (Mos Def), were originally part of this year's Boston Calling lineup, but the festival announced last month that the duo dropped off due to "unforseen circumstances." (The festival replaced them with Lil Nas X.) Talib Kweli took to Twitter, as he is wont to do, earlier this week, writing the reason they dropped off was Boston Calling did not give them enough of their fee up front: "It’s simple. Black Star asks for 50% deposit in order to guarantee a show. Boston Calling refused to pay that. So we had to cancel. They replaced us with Lil Nas X. Enjoy!"

Boston Calling responded, saying that Kweli's tweeted accusation was "factually incorrect" though they didn't get into details:

Which Kweli then escalated:

And that's pretty much where the Twitter spat ended. The Boston Globe asked Boston Calling representatives for comment to which they did not reply.

In other news, Talib Kweli wraps up a three-night live band run at Brooklyn Bowl tonight.

Boston Calling also had Janelle Monae drop off the lineup, but they added Chvrches, Betty Who, and others. The 2019 edition of the festival takes place Memorial Day Weekend (May 24-26) at the Harvard Athletic Complex.